A rotary riveting mechanism and its working method

Abstract

The present invention relates to a rotary riveting mechanism and a working method thereof, and belongs to the field of riveting. The rotary riveting mechanism of the present invention comprises a base plate, a tray conveyor line, a frame, a zero-point control mechanism, a three-degree rotary riveting cutter head and a rotary riveting power head. The frame is mounted on the base plate, the tray conveyor line is fixed to the base plate, the zero-point control mechanism is mounted on the base plate, the rotary riveting power head is mounted on the frame, and a three-degree rotary riveting cutter head is arranged on the rotary riveting power head. The present invention also provides a rotary riveting mechanism and a working method thereof that are easy to operate. The present invention has a simple and reasonable structural design, is safe and reliable, is easy to operate, improves the rotary riveting precision, and meets the use requirements.

Description

Technical Field

[0001] The present invention relates to a mechanism and a method, in particular to a rotary riveting mechanism and a working method thereof, and belongs to the riveting field. Background Art

[0002] The existing riveting mechanism cannot eliminate the inherent tolerance of the product, resulting in insufficient riveting precision and unable to meet existing riveting needs.

[0003] A Chinese patent with publication date of July 27, 2021 and publication number CN213794045U discloses a utility model patent named "A rotary riveting device". The patent includes a base, a first driving device, a first fixed seat, a second driving device, a second fixed seat, a third driving device, a fourth driving device, a third fixed seat, a connecting plate, a riveting shaft, a rack fixed seat, a rotating shaft, a rack, a riveting needle, a riveting needle seat, a gear, a clamping jaw driving device, a clamping jaw, a clamping jaw mounting plate, a rack driving device, and a rotating shaft fixed seat. A rotary riveting device of the utility model adopts a fully automatic method to rivet the product. Before riveting, the device will automatically adjust the direction according to the angle of the material being fed, so that the material to be riveted is consistent with the riveting direction. This flexible design eliminates the need to add a rotating device to equipment whose feeding direction is inconsistent with the riveting direction, thereby reducing the cost of the equipment, reducing the overall volume of the equipment, and improving the production efficiency of the equipment. It also integrates the device to reduce the links, improves the product's qualified rate, and makes the use of the equipment more flexible and convenient; however, the riveting accuracy is insufficient and cannot meet the existing riveting requirements, so it still has the above-mentioned defects.

[0004] Therefore, it is particularly necessary to provide a rotary riveting mechanism with a simple and reasonable structural design and improved rotary riveting accuracy. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a rotary riveting mechanism and a working method thereof which have a simple and reasonable structural design, are safe and reliable, are easy to operate, and can improve the rotary riveting precision.

[0006] The technical solution adopted by the present invention to solve the above problems is: the rotary riveting mechanism includes a base plate, a pallet conveyor line and a frame, the frame is mounted on the base plate, and the pallet conveyor line is fixed to the base plate, and is characterized in that: it also includes a zero-point control mechanism, a three-degree rivet cutter head and a rivet power head, the zero-point control mechanism is mounted on the base plate, the rivet power head is mounted on the frame, the rivet power head is provided with a three-degree rivet cutter head, the zero-point control mechanism includes a pallet, a pressure sensor, a cylinder, a spring, a guide bearing, a limit plate, a jacking mounting plate, a connecting rod, a pressure connecting sleeve and a pallet jacking plate, the pallet is movably connected to the pallet jacking plate, the pressure connecting sleeve is connected to the pallet jacking plate, the jacking mounting plate is provided with a guide bearing, the limit plate is movably arranged on the jacking mounting plate through a connecting rod, one end of the cylinder is connected to the limit plate, the other end of the cylinder is connected to the pressure connecting sleeve, and a spring and a pressure sensor are provided in the pressure connecting sleeve; the pallet is movably arranged on the pallet conveyor line.

[0007] Preferably, the pressure sensor of the present invention is connected to the cylinder, and the pressure sensor is arranged above the spring.

[0008] Preferably, the present invention further comprises a rotating support plate, which is movably arranged on the jacking mounting plate and is used to support the riveting force.

[0009] The present invention also provides a working method of a rotary riveting mechanism, which is characterized by the following specific steps:

[0010] (S1) The pallet is in place, and the riveting power head drives the three-degree riveting cutter head to descend to the preset origin position;

[0011] (S2) The cylinder moves, driving the pallet lifting plate to lift up;

[0012] (S3) The riveting power head contacts the product at a speed of 1 mm / s. The system monitors the value change of the pressure sensor, captures the inflection point of the force graph, and records the corresponding displacement value.

[0013] (S4) The system calculates the riveting depth value of the product, and the rotary riveting power head rotates to drive the zero point control mechanism to rotate and descend, monitors the force displacement, and returns after reaching the designated position.

[0014] Compared with the existing technology, the present invention has the following advantages and effects: the overall structural design is simple and reasonable, safe and reliable, easy to operate, and the tolerance difference of the product itself is eliminated through closed-loop displacement servo control, thereby improving the rotary riveting accuracy; the pressure sensor is used to set the product zero point, which has high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0016] Figure 2Schematic diagram of the structure of the zero point control mechanism in an embodiment of the present invention.

[0017] In the figure: base plate 1, pallet conveyor line 2, zero point control mechanism 3, frame 4, three-degree riveting cutter head 5, riveting power head 6; zero point control mechanism 3: pallet 31, pressure sensor 32, cylinder 33, spring 34, guide bearing 35, limit plate 36, jacking mounting plate 37, connecting rod 38, pressure connecting sleeve 39, pallet jacking plate 40, rotating support plate 41. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0019] Example

[0020] See also Figures 1 to 2 The rotary riveting mechanism of this embodiment includes a base plate 1, a pallet conveyor line 2, a zero point control mechanism 3, a frame 4, a three-degree rotary riveting cutter head 5 and a rotary riveting power head 6. The frame 4 is mounted on the base plate 1, the pallet conveyor line 2 is fixed to the base plate 1, the zero point control mechanism 3 is mounted on the base plate 1, and the rotary riveting power head 6 is mounted on the frame 4. The rotary riveting power head 6 is provided with a three-degree rotary riveting cutter head 5.

[0021] The zero point control mechanism 3 in this embodiment includes a pallet 31, a pressure sensor 32, a cylinder 33, a spring 34, a guide bearing 35, a limit plate 36, a lifting mounting plate 37, a connecting rod 38, a pressure connecting sleeve 39 and a pallet lifting plate 40. The pallet 31 is movably connected to the pallet lifting plate 40, the pressure connecting sleeve 39 is connected to the pallet lifting plate 40, the lifting mounting plate 37 is provided with a guide bearing 35, the limit plate 36 is movably set on the lifting mounting plate 37 through the connecting rod 38, one end of the cylinder 33 is connected to the limit plate 36, and the other end of the cylinder 33 is connected to the pressure connecting sleeve 39, and the pressure connecting sleeve 39 is provided with a spring 34 and a pressure sensor 32; the pallet 31 is movably set on the pallet conveyor line 2.

[0022] In this embodiment, the pressure sensor 32 is connected to the cylinder 33 , and the pressure sensor 32 is arranged above the spring 34 .

[0023] The rotating support plate 41 in this embodiment is movably disposed on the lifting mounting plate 37 .

[0024] The connecting rod 38 in this embodiment cooperates with the guide bearing 35 to move up and down.

[0025] In this embodiment, there are six springs and two guide bearings; the number is selected according to actual conditions.

[0026] The working process of the rotary riveting mechanism of this embodiment is as follows: (S1) the tray 31 is in place, and the rotary riveting power head 6 drives the three-degree rotary riveting cutter head 5 to descend to the set preset origin position; (S2) the cylinder 33 is actuated to drive the tray lifting plate 40 to lift up; (S3) the rotary riveting power head 6 hits the product at a speed of 1 mm / s, and the system monitors the value change of the pressure sensor 32, captures the inflection point of the force image, and records the corresponding displacement value; (S4) the system calculates the riveting depth value of the product, and the rotary riveting power head 6 rotates to drive the zero point control mechanism 3 to rotate and descend, monitors the force displacement, and returns after being in place.

[0027] Through the above description, those skilled in the art can already implement it.

[0028] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. Any equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Those skilled in the art of the technology to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A rotary riveting mechanism, comprising a base plate (1), a tray conveyor line (2) and a frame (4), wherein the frame (4) is mounted on the base plate (1), and the tray conveyor line (2) is fixed to the base plate (1), characterized in that: The invention also comprises a zero point control mechanism (3), a three-degree rotary riveting cutter head (5) and a rotary riveting power head (6), wherein the zero point control mechanism (3) is mounted on the base plate (1), the rotary riveting power head (6) is mounted on the frame (4), the rotary riveting power head (6) is provided with a three-degree rotary riveting cutter head (5), the zero point control mechanism (3) comprises a tray (31), a pressure sensor (32), a cylinder (33), a spring (34), a guide bearing (35), a limit plate (36), a lifting mounting plate (37), a connecting rod (38), a pressure connection sleeve (39), a tray lifting plate (40) and a rotating support plate (41), the tray (31) is movably connected to the tray lifting plate (40), and the pressure connection sleeve ( The tray (31) is connected to a tray lifting plate (40), a guide bearing (35) is arranged on the lifting mounting plate (37), a limit plate (36) is movably arranged on the lifting mounting plate (37) through a connecting rod (38), one end of the cylinder (33) is connected to the limit plate (36), and the other end of the cylinder (33) is connected to a pressure connecting sleeve (39), and a spring (34) and a pressure sensor (32) are arranged in the pressure connecting sleeve (39); the tray (31) is movably arranged on the tray conveyor line (2); the pressure sensor (32) is connected to the cylinder (33), and the pressure sensor (32) is arranged above the spring (34); and the rotating support plate (41) is movably arranged on the lifting mounting plate (37).

2. A working method of a rotary riveting mechanism, using the rotary riveting mechanism according to claim 1, characterized in that: The specific steps are as follows: (S1) The tray (31) is in place, and the riveting power head (6) drives the three-degree riveting cutter head (5) to descend to a preset origin position; (S2) The cylinder (33) moves to drive the tray lifting plate (40) to lift up; (S3) The riveting power head (6) contacts the product at a speed of 1 mm / s, and the system monitors the value change of the pressure sensor (32), captures the turning point of the force graph, and records the corresponding displacement value; (S4) The system calculates the riveting depth value of the product, and the rotary riveting power head (6) rotates to drive the zero point control mechanism (3) to rotate and descend, monitors the force displacement, and returns after reaching the desired position.

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